JPS57142767A - Preventing method for sticking of slab during hot scarfing of steel material - Google Patents
Preventing method for sticking of slab during hot scarfing of steel materialInfo
- Publication number
- JPS57142767A JPS57142767A JP2816981A JP2816981A JPS57142767A JP S57142767 A JPS57142767 A JP S57142767A JP 2816981 A JP2816981 A JP 2816981A JP 2816981 A JP2816981 A JP 2816981A JP S57142767 A JPS57142767 A JP S57142767A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- sticking
- high pressure
- scarfing
- retreating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/06—Machines, apparatus, or equipment specially designed for scarfing or desurfacing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
PURPOSE:To prevent the slag sticking and clogging in bottom nozzles, to scarf a steel material down to its tail end and to improve yield by injecting liquid and a gas of high pressure in the direction opposite from the advance direction of the steel material from just prior to retreating of the nozzles upon completion of the hot scarfing of the steel material. CONSTITUTION:A piping 5 for high pressure liquid is disposed separately from a high pressure gas piping 3, and just prior to opening and retreating of scarfing nozzles 2, 2' or at the same instant of their retreating, the high pressure liquid such as water is injected toward the direction opposite from the advancing direction of the scarfing material. The sticking and clogging of slag in the bottom nozzle 2' are prevented and the slag is removed positively. At this time, the rates of injection of the liquid and the gas are kept at 30:70% by weight, so that the decrease in the temp. of the steel material in the next stage is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2816981A JPS57142767A (en) | 1981-02-27 | 1981-02-27 | Preventing method for sticking of slab during hot scarfing of steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2816981A JPS57142767A (en) | 1981-02-27 | 1981-02-27 | Preventing method for sticking of slab during hot scarfing of steel material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57142767A true JPS57142767A (en) | 1982-09-03 |
Family
ID=12241232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2816981A Pending JPS57142767A (en) | 1981-02-27 | 1981-02-27 | Preventing method for sticking of slab during hot scarfing of steel material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57142767A (en) |
-
1981
- 1981-02-27 JP JP2816981A patent/JPS57142767A/en active Pending
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